CN111912714A - Universal barrel hydraulic load experimental device and installation experimental method thereof - Google Patents
Universal barrel hydraulic load experimental device and installation experimental method thereof Download PDFInfo
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- 238000002474 experimental method Methods 0.000 title claims abstract description 92
- 238000009434 installation Methods 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 116
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 103
- 239000010959 steel Substances 0.000 claims abstract description 103
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 238000002347 injection Methods 0.000 claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 40
- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000012360 testing method Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000013102 re-test Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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Abstract
The invention discloses a universal barrel hydraulic load experiment device and an installation experiment method thereof, and belongs to the technical field of barrel experiment devices. The device comprises an experiment cylinder, a steel core inner cylinder, a first sealing end and a second sealing end; the steel core inner cylinder is embedded into the cavity of the experiment cylinder, and a flow channel is formed between the outer peripheral surface of the steel core inner cylinder and the inner peripheral surface of the experiment cylinder; a first extending end of the steel core inner cylinder is hermetically fixed with a first end of the experiment cylinder through a first sealing end, and the first sealing end is connected with an external water injection pipeline; the jacking ring sleeved at the first extending end is connected with the first sealing end; and a second extending end of the steel core inner cylinder is hermetically fixed with a second end of the experiment cylinder through a second sealing end, and the second sealing end is connected with a pressure detector. The problems of complex structural design, inconvenient operation, poor universality and long experimental period of the existing water pressure experiment are solved. The flow channel is formed between the steel core inner cylinder and the experiment cylinder, the pressure is relieved by the jacking ring, the experiment period is short, and the cost is low.
Description
Technical Field
The invention relates to the technical field of a cylinder body experiment device, in particular to a universal cylinder body hydraulic load experiment device and an installation experiment method thereof.
Background
For the cylinder structure, a pressure experiment is required to detect the internal pressure bearing capacity of the cylinder structure, the strain of the cylinder structure in each position direction is measured in a pressure environment, and the strain is compared with design simulation calculation to determine whether sufficient safety margin exists; at the same time, it is also necessary to test its end load to check the load capacity at both ends.
In the prior art, application numbers are adopted: 201910439690.3, it discloses a barrel water pressure experimental apparatus, and its theory of operation is: the end faces of the front cover and the rear cover of the cylinder body are fixed by the baffle plates, the connecting shaft is connected with the front baffle plate and the rear baffle plate, the pressure detector detects the pressure in the cylinder, water is injected into the cylinder through the water injection pipeline, and during an experiment, the load received in the cylinder body is transmitted to the connecting shaft through the front baffle plate and the rear baffle plate so as to unload the hydraulic pressure load which is originally received by the connecting piece of the front cover and the rear cover of the.
However, in the above-mentioned manner of offsetting the end load by the connecting shaft, when the external pressure is relatively high, the number of the connecting shafts to be installed is relatively large, and the diameter of the connecting shaft is relatively large to bear the relatively high external pressure; during measurement, a sensor is needed to be adopted for the tension of the connecting shaft so as to ensure that the stress of the connecting shaft is uniform; when the length of the cylinder is longer, the screw thread of the connecting shaft needs to be adjusted to counteract the axial tension for each level of load, the connecting shaft is deformed, large displacement is easy to generate, and a measurement error occurs; in the experimental process, the pretightening force of the connecting shaft needs to be continuously adjusted according to the gradual rise of the load so as to ensure that the deformation of the connecting shaft is within the range of the calculation requirement; after the connecting shaft is used for many times, fatigue damage is easy to occur, frequent detection and verification are needed, and experimental accidents such as strength damage and the like of the connecting shaft are avoided; the connecting shaft is made of high-strength steel and is monitored regularly. Therefore, the experimental device has the problems of complex structural design, inconvenient operation of the experimental method, poor universality, high cost and the like.
In addition, because the cylinder structures belong to large-scale structural parts, such as a cylinder structure with the length of 10m and the diameter of 800mm, the volume is about 5027 liters, the water consumption is large during detection experiments, the time required for water inlet and water discharge in the cylinder is long, and the period of the experiments is long.
Disclosure of Invention
The invention aims to provide a universal barrel hydraulic load experiment device, which aims to solve the technical problems that in the prior art, a structure of connecting shafts and front and rear end covers is adopted outside a barrel, the structural design is complex, and when a hydraulic experiment is carried out, an experiment method is inconvenient to operate, the universal performance is poor, the experiment period is long, and the experiment cost is high.
The invention provides a universal cylinder hydraulic load experiment device which comprises an experiment cylinder, a steel core inner cylinder, a first sealing end and a second sealing end, wherein the steel core inner cylinder is arranged in the experiment cylinder;
the steel core inner cylinder is embedded in the cavity of the experimental cylinder, and a flow channel for water flow to pass through is formed between the outer peripheral surface of the steel core inner cylinder and the inner peripheral surface of the experimental cylinder;
the steel core inner cylinder is provided with a first extending end and a second extending end at two ends of the experiment cylinder respectively; the first extending end and the first end of the experiment cylinder are fixed in a sealing mode through a first sealing end, the first sealing end is connected with an external water injection pipeline, and the external water injection pipeline is communicated with the flow channel; the first extending end is sleeved with a jacking ring, and the jacking ring is connected with the first sealing end; the second end of the second extending end and the second end of the experiment cylinder are fixed in a sealing mode through a second sealing end, and the second sealing end is connected with the pressure detector.
Furthermore, an annular seat is arranged on the end face of the first sealing end;
the annular seat is connected with the jacking ring through a first locking piece along the axial direction of the steel core inner cylinder.
Further, the first end that stretches out of steel core inner tube is equipped with first connecting hole along radial direction, and the tight ring in top is equipped with the second connecting hole, and first connecting hole passes through the second retaining member with the second connecting hole and is connected.
Furthermore, the first sealing end comprises a first end face flange, the first end of the experiment cylinder body is provided with a second end face flange, and the first end face flange is connected with the second end face flange to realize the sealing and fixing of the first extending end of the steel core inner cylinder;
the second sealing end comprises a third end face flange, the second end of the experiment cylinder body is provided with a fourth end face flange, and the third end face flange is connected with the fourth end face flange to realize that the second extending end of the steel core inner cylinder is fixed in a sealing mode.
Furthermore, a water injection hole is formed in the first end face flange, the outer side end of the water injection hole is connected with an external water injection pipeline, and the inner side end of the water injection hole is communicated with the first end of the flow channel;
and the third end face flange is provided with an exhaust hole which is communicated with the second end of the flow passage.
Furthermore, a first sealing groove is formed in the end face, abutted to the second end face flange, of the first end face flange, and a first sealing ring is connected in the first sealing groove;
and a second sealing groove is formed in the end face where the third end face flange is abutted to the fourth end face flange, and a second sealing ring is connected in the second sealing groove.
Further, a third sealing groove is formed in the inner ring surface of the first end face flange, and a third sealing ring is connected in the third sealing groove;
and a fourth sealing groove is formed in the inner ring surface of the third end surface flange, and a fourth sealing ring is connected in the fourth sealing groove.
Furthermore, an annular boss is arranged at a second extending end of the steel core inner cylinder, and a third end face flange abuts against the inner side of the annular boss.
The invention also provides an installation experiment method of the universal cylinder hydraulic load experiment device, which comprises the following steps:
a. installing the second sealed end
Sleeving a second sealing end on a second extending end of the steel core inner cylinder, and abutting against the inner side of the annular boss to fix the second sealing end;
b. inner cylinder for installing steel core
The first extending end of the steel core inner cylinder is embedded along the second end of the experiment cylinder body, so that the first extending end of the steel core inner cylinder extends out of the first end of the experiment cylinder body, the second extending end of the steel core inner cylinder extends out of the second end of the experiment cylinder body, a flow channel for water flow to pass through is formed between the outer peripheral surface of the steel core inner cylinder and the inner peripheral surface of the experiment cylinder body, and the second extending end of the steel core inner cylinder is fixed at the second end of the experiment cylinder body through the second sealing end;
c. installing the first sealed end
Sleeving a first sealing end at a first extending end of the steel core inner cylinder, and fixing the first extending end of the steel core inner cylinder at the first end of the experiment cylinder by the first sealing end;
d. water injection test detection
The outside water injection pipeline injection rivers on the first sealed end, rivers along the water injection hole entering runner in, the exhaust hole in time exhausts the air in the runner, the pressure detector on the sealed end of second detects the pressure in the runner.
Compared with the prior art, the universal cylinder water pressure load experimental device has the following advantages:
the steel core inner cylinder is embedded into a cavity of the experimental cylinder body, and the installation position of the steel core inner cylinder is limited; a flow channel is formed between the outer peripheral surface of the steel core inner cylinder and the inner peripheral surface of the experiment cylinder, and water flow passes through the flow channel, so that the water flow capacity is greatly reduced, and the water pressure of the water flow is conveniently detected; the steel core inner cylinder is provided with a first extending end and a second extending end at two ends of the experiment cylinder respectively so as to limit the positions of the two ends of the steel core inner cylinder; the first extending end is fixed with the first end of the experiment cylinder through a first sealing end, and the first extending end of the steel core inner cylinder is locked; the first sealing end is connected with an external water injection pipeline which is communicated with the flow channel, so that an external water source can directly enter the flow channel, and a water injection experiment is facilitated; the first extending end is sleeved with a jacking ring, the jacking ring is connected with the first sealing end, and the jacking ring is used for directly relieving the pressure of the water in the flow channel; the second extending end is fixed with the second end of the experiment cylinder through a second sealing end, and the position of the second extending end of the steel core inner cylinder is locked; the second sealing end is connected with a pressure detector, so that the water pressure in the flow channel can be detected in time; the invention has simple structural design, greatly reduces the sectional area of water by utilizing the inner cylinder of the steel core, reduces the axial pressure generated by water pressure, and has short experimental period and low experimental cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an end face of a universal barrel hydraulic load experimental apparatus provided in an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of another end face of the universal barrel hydraulic load testing apparatus according to the embodiment of the present invention;
FIG. 4 is a front view of a universal barrel hydraulic load testing device provided in an embodiment of the present invention;
FIG. 5 is an enlarged view of the portion B of FIG. 4;
FIG. 6 is a cross-sectional view taken along the line C-C in FIG. 4;
FIG. 7 is an enlarged view of section D of FIG. 6;
FIG. 8 is an enlarged view of section E of FIG. 6;
fig. 9 is a flowchart of an installation experiment method of the universal cylinder hydraulic load experiment apparatus according to the embodiment of the present invention.
Description of reference numerals:
100-an experimental cylinder; 200-a steel core inner cylinder;
300-a first sealed end; 400-a second sealed end;
101-a flow channel; 102-a second end face flange;
103-a fourth end face flange; 104-an annular boss;
201-a tightening ring; 202-a first locking member;
203-a first connection hole; 204-second connection hole;
205-a second locking member; 301-annular seat;
302-a first end flange; 303-water injection holes;
304-a first seal groove; 305-a first sealing ring;
306-a third seal groove; 307-third seal ring;
401-third end face flange; 402-a vent hole;
403-a second seal groove; 404-a second sealing ring;
405-a fourth seal groove; 406-fourth seal ring.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 8, the universal cylinder hydraulic load testing apparatus provided by the present invention includes a testing cylinder 100, a steel core inner cylinder 200, a first sealing end 300 and a second sealing end 400;
the steel core inner cylinder 200 is embedded in the cavity of the experimental cylinder 100, and a flow channel 101 for water to flow through is formed between the outer peripheral surface of the steel core inner cylinder 200 and the inner peripheral surface of the experimental cylinder 100;
the steel core inner cylinder 200 is provided with a first extending end and a second extending end at two ends of the experiment cylinder 100 respectively; the first extending end and the first end of the experiment cylinder 100 are fixed in a sealing mode through a first sealing end 300, the first sealing end 300 is connected with an external water injection pipeline, and the external water injection pipeline is communicated with the flow channel 101; the first extending end is sleeved with a tightening ring 201, and the tightening ring 201 is connected with the first sealing end 300; the second protruding end and the second end of the experiment cylinder 100 are fixed in a sealing mode through a second sealing end 400, and the second sealing end 400 is connected with the pressure detector.
In an embodiment of the present invention, as shown in fig. 1 and 3, the steel core inner cylinder 200 is embedded inside the cavity of the experiment cylinder 100, and the steel core inner cylinder 200 adopts a hollow structure, so that the overall weight can be reduced; during a water injection experiment, water flow enters along the flow channel 101, and at the moment, the pressure generated by the water flow is changed from the original inner circular area of the experiment cylinder 100 to the inner circular area of the experiment cylinder 100 minus the outer circular area of the steel core inner cylinder 200, and the diameter of the steel core inner cylinder 200 is utilized to greatly reduce the water pressure area, so that the axial pressure generated by the water pressure is reduced; the water pressure area is reduced, the water inlet time and the water discharge time can be reduced, the experiment period is short, and the experiment cost is reduced; the first end that stretches out of steel core inner tube 200 left end is sealed fixed through first sealed end 300, the second of right-hand member stretches out the end and passes through second sealed end 400 sealed fixed, push up tightly the both ends of steel core inner tube 200, make axial load reach the rated load after, need not with the help of external sensor, guarantee under the water pressure continues the loaded condition, water pressure no longer rises to tip axial load, and in the water pressure loading process, utilize the first tight ring 201 that stretches out the end and cup joint to directly carry out the pressure release to the water pressure in the passageway 101, need not to adjust, among the prior art of avoiding appearing, the tensile force damage that produces the connecting shaft, lead to the problem that fatigue damage appears easily in the connecting shaft. The strength of the steel core inner cylinder 200 is far higher than the pressure of a hydraulic load, retest and retest are not needed, the operation is simple, and the working efficiency is improved.
In addition, when the diameter of the steel core inner cylinder 200 is 700mm, the steel core inner cylinder can be applied to any one of the experimental cylinder 100 with the diameter ranging from 700mm to 900mm, and the universality is good.
Further, the end surface of the first sealing end 300 is provided with an annular seat 301;
the annular seat 301 is connected with the jacking ring 201 through the first locking member 202 along the axial direction of the steel core inner cylinder 200.
In an embodiment of the present invention, as shown in fig. 4 and 5, an annular seat 301 extending outward is formed on a left end surface of the first sealing end 300, a top clamping ring 201 is fixedly sleeved on an outer peripheral surface of a first extending end of a left end of the steel core inner cylinder 200, the annular seat 301 and the top clamping ring 201 are fixedly connected through a first locking member 202 along an axial horizontal direction of the steel core inner cylinder 200, a certain gap is left between the annular seat 301 and the top clamping ring 201 to form a certain displacement amount, so as to ensure that the first end flange 302 does not move leftward under the squeezing action of water pressure when in use; the first locking piece 202 adopts bolts, and six evenly distributed bolts are adopted to fix the annular seat 301 and the puller ring 201 in the axial direction, so that the firm connection position between the annular seat 301 and the puller ring 201 is ensured.
Further, a first protruding end of the steel core inner cylinder 200 is provided with a first connecting hole 203 along the radial direction, the tightening ring 201 is provided with a second connecting hole 204, and the first connecting hole 203 and the second connecting hole 204 are connected through a second locking member 205.
In an embodiment of the present invention, as shown in fig. 1 and fig. 2, an outer peripheral surface of a first protruding end of a left end of the steel core inner cylinder 200 is fixedly sleeved with a jacking ring 201, a first connection hole 203 is arranged along a radial direction of the steel core inner cylinder 200, the jacking ring 201 is provided with a second connection hole 204 along the radial direction of the steel core inner cylinder 200, and the two connection holes are threaded holes; two threaded holes are connected through a second locking part 205, the second locking part 205 is a cylindrical pin, the left end of the steel core inner cylinder 200 and the jacking ring 201 are fixed in the radial direction by the aid of the cylindrical pins uniformly distributed in six directions, and firmness of connection positions between the steel core inner cylinder 200 and the jacking ring 201 is guaranteed.
Further, the first sealing end 300 comprises a first end face flange 302, the first end of the experiment cylinder 100 is provided with a second end face flange 102, and the first end face flange 302 is connected with the second end face flange 102 to realize sealing and fixing of the first extending end of the steel core inner cylinder 200;
the second sealing end 400 comprises a third end face flange 401, the second end of the experiment cylinder 100 is provided with a fourth end face flange 103, and the third end face flange 401 is connected with the fourth end face flange 103, so that the second extending end of the steel core inner cylinder 200 is sealed and fixed.
In an embodiment of the present invention, as shown in fig. 4 and 6, the first end flange 302 and the second end flange 102 are fixed by six uniformly distributed cylindrical pins, and are fixed to the left end of the steel core inner cylinder 200 in a sealing manner; the third end face flange 401 and the fourth end face flange 103 are fixed through six uniformly distributed cylindrical pins, and the right end of the steel core inner cylinder 200 is fixed in a sealing mode.
Further, a water injection hole 303 is formed in the first end face flange 302, the outer side end of the water injection hole 303 is connected with an external water injection pipeline, and the inner side end of the water injection hole 303 is communicated with the first end of the flow channel 101;
the third end face flange 401 is provided with an exhaust hole 402, and the exhaust hole 402 is communicated with the second end of the flow channel 101.
In an embodiment of the present invention, as shown in fig. 6, 7, and 8, a water injection hole 303 is disposed on the first end flange 302 at the left end, an outer end of the left end of the water injection hole 303 is connected to an external water injection pipeline, and an inner end of the right end is communicated with the first end at the left end of the flow channel 101, so that when the external water injection pipeline is opened, water is directly injected through the water injection hole 303, and water flows into the flow channel 101.
An exhaust hole 402 is formed in the third end face flange 401 at the right end, and the exhaust hole 402 is communicated with the second end at the right end of the flow passage 101, so that when water is injected into the flow passage 101, gas in the flow passage 101 is exhausted through the exhaust hole 402.
Furthermore, a first sealing groove 304 is formed in the end face where the first end face flange 302 abuts against the second end face flange 102, and a first sealing ring 305 is connected in the first sealing groove 304;
the end face of the third end face flange 401 abutting against the fourth end face flange 103 is provided with a second seal groove 403, and a second seal ring 404 is connected in the second seal groove 403.
In an embodiment of the present invention, as shown in fig. 6, 7, and 8, a first sealing groove 304 is disposed on a right end face of the first end face flange 302, the first sealing groove 304 is an annular groove, a first sealing ring 305 is clamped in the annular groove, the first sealing ring 305 is an annular rubber ring, and a friction force between the first end face flange 302 and the second end face flange 102 is increased by the annular rubber ring, so as to ensure that a connection position between the first end face flange 302 and the second end face flange 102 is firm; set up second seal groove 403 at the left end face of third end face flange 401, second seal groove 403 is the ring channel, joint second sealing washer 404 in the ring channel, and second sealing washer 404 is annular rubber circle, utilizes the annular rubber circle to increase the frictional force between third end face flange 401 and the fourth end face flange 103, ensures that third end face flange 401 and fourth end face flange 103 hookup location are firm.
In other embodiments of the present invention, the number of the first seal grooves 304 and the number of the first seal rings 305 are a plurality of corresponding pairs, and the number of the second seal grooves 403 and the number of the second seal rings 404 are a plurality of corresponding pairs, as long as the connection positions between the first end face flange 302 and the second end face flange 102 and between the third end face flange 401 and the fourth end face flange 103 are firm.
Further, a third seal groove 306 is formed in the inner ring surface of the first end face flange 302, and a third seal ring 307 is connected in the third seal groove 306;
a fourth seal groove 405 is formed in an inner ring surface of the third end face flange 401, and a fourth seal ring 406 is connected in the fourth seal groove 405.
In an embodiment of the present invention, as shown in fig. 6, 7, and 8, a third seal groove 306 is disposed on an inner annular surface of the first end flange 302, the third seal groove 306 is an inwardly recessed annular groove, a third seal ring 307 is connected in the annular groove, and the third seal ring 307 is a rubber ring, which can increase a friction force between the inner annular surface of the first end flange 302 and an outer peripheral surface of a first protruding end at the left end of the steel core inner cylinder 200; the fourth sealing groove 405 is formed in the inner ring surface of the third end face flange 401, the fourth sealing groove 405 is an inward-recessed annular groove, a fourth sealing ring 406 is connected in the annular groove, the fourth sealing ring 406 is a rubber ring, and the rubber ring can increase friction force between the inner ring surface of the third end face flange 401 and the outer peripheral surface of the second extending end at the right end of the steel core inner cylinder 200.
In other embodiments of the present invention, the number of the third seal grooves 306 and the number of the third seal rings 307 are correspondingly multiple pairs, and the number of the fourth seal grooves 405 and the number of the fourth seal rings 406 are correspondingly multiple pairs, so as to ensure the firmness of the connection positions of the two ends of the steel core inner tube 200.
Further, a second extending end of the steel core inner cylinder 200 is provided with an annular boss 104, and a third end face flange 401 abuts against the inner side of the annular boss 104.
In an embodiment of the present invention, as shown in fig. 6 and 8, the annular boss 104 is an annular protrusion formed on an outer peripheral surface of a second protruding end at the right end of the steel core inner cylinder 200, and after the third end flange 401 is sleeved along the steel core inner cylinder 200, a right side of the third end flange 401 directly abuts against an inner side of the annular boss 104, so as to fix a position of the third end flange 401 by the annular boss 104.
As shown in fig. 9, the invention further provides an installation experiment method of the universal cylinder hydraulic load experiment device, which comprises the following steps:
in this embodiment, the diameter of the experimental cylinder 100 is 800mm, the tensile loads at both ends of the experimental cylinder 100 are 15t, and the outer circular cross-sectional area of the experimental cylinder 100 is 0.25 × 8002mm2×π-(15×104)N/1Mpa＝352,654mm2The inner diameter is phi 670mm, and the hydraulic pressure required by the tensile force at the two ends of the experimental cylinder 100 is 0.48 Mpa; the diameter of the steel core inner cylinder 200 is 500mm, and the thickness is 30 mm;
a. installing the second sealed end
Sleeving a second sealing end 400 at a second extending end of the steel core inner cylinder 200, and abutting against the inner side of the annular boss 104 to fix the second sealing end 400;
in the installation process, the third end face flange 401 abuts against the inner side of the annular boss 104, the inner annular surface of the third end face flange 401 and the second extending end of the steel core inner cylinder 200 are fixed through a fourth sealing ring 406, and the third end face flange 401 and the fourth end face flange 103 are fixed through a second sealing ring 404.
b. Inner cylinder for installing steel core
A first extending end of the steel core inner cylinder 200 is embedded along the second end of the experiment cylinder 100, so that the first extending end of the steel core inner cylinder 200 extends out of the first end of the experiment cylinder 100, a second extending end of the steel core inner cylinder 200 extends out of the second end of the experiment cylinder 100, a flow channel 101 for water flow to pass through is formed between the outer circumferential surface of the steel core inner cylinder 200 and the inner circumferential surface of the experiment cylinder 100, and the second extending end of the steel core inner cylinder 200 is fixed at the second end of the experiment cylinder 100 by a second sealing end 400;
c. installing the first sealed end
Sleeving a first sealing end 300 at a first extending end of the steel core inner cylinder 200, wherein the first sealing end 300 fixes the first extending end of the steel core inner cylinder 200 at the first end of the experiment cylinder 100;
during the installation process, the inner annular surface of the first end face flange 302 and the first protruding end of the steel core inner cylinder 200 are fixed by a third sealing ring 307, and the first end face flange 302 and the second end face flange 102 are fixed by a first sealing ring 305. Installing a jacking ring 201, sleeving the jacking ring 201 at a first extending end of the steel core inner cylinder 200, fixing the jacking ring 201 at the first extending end of the steel core inner cylinder 200 by adopting six uniformly distributed cylindrical pins in the radial direction, and fixing the jacking ring 201 on the annular seat 301 by adopting six uniformly distributed bolts in the axial direction.
d. Water injection test detection
The outside water injection pipeline on the first sealed end 300 injects rivers, and rivers along water injection hole 303 gets into in the runner 101, and exhaust hole 402 in time exhausts the air in the runner 101, and during the exhaust, can elevate some exhaust hole 402, makes it be in the top position to guarantee that the gas in the runner 101 can all discharge, then utilize the pressure detector on the third terminal surface flange 401 of the sealed end 400 of second to detect the pressure in the runner 101.
During the experiment, a loading device is connected to the water injection hole 303, the two ends of the flow channel 101 are plugged by steel plugs, the pressure is loaded to 0.48Mpa step by step, and when the pressure value is reached, namely the tensile loads at the two ends of the experiment cylinder 100 reach 15t, the tensile load examination of the end face of the experiment cylinder 100 is completed.
In the embodiment, 12 GB/T578310.8-grade M16 x 120 bolts are adopted for jacking, and the number and specification of the cylindrical pins can be roughly calculated and are more than 2 times of the highest load. Because the tightening ring 201 is connected with the steel core inner cylinder 200, the thickness of the steel core inner cylinder 200 in the embodiment is 30mm, the rigidity is sufficient, and the steel core inner cylinder is not deformed, in the experimental process, the displacement of the tightening ring 201 is 0, after tightening, the first end face flange 302 is not displaced, and the load of 0.48Mpa-1Mpa is completely offset.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The universal cylinder hydraulic load experiment device is characterized by comprising an experiment cylinder (100), a steel core inner cylinder (200), a first sealing end (300) and a second sealing end (400);
the steel core inner cylinder (200) is embedded into the cavity of the experimental cylinder (100), and a flow channel (101) for water to pass through is formed between the outer peripheral surface of the steel core inner cylinder (200) and the inner peripheral surface of the experimental cylinder (100);
the steel core inner cylinder (200) is provided with a first extending end and a second extending end at two ends of the experiment cylinder (100) respectively; the first extending end and the first end of the experiment cylinder (100) are fixed in a sealing mode through the first sealing end (300), the first sealing end (300) is connected with an external water injection pipeline, and the external water injection pipeline is communicated with the flow channel (101); the first extending end is sleeved with a jacking ring (201), and the jacking ring (201) is connected with the first sealing end (300); the second extending end and the second end of the experiment cylinder (100) are fixed in a sealing mode through the second sealing end (400), and the second sealing end (400) is connected with a pressure detector.
2. The universal cartridge hydraulic load testing device according to claim 1, wherein the end face of the first sealing end (300) is provided with an annular seat (301);
the annular seat (301) is connected with the jacking ring (201) through a first locking piece (202) along the axial direction of the steel core inner cylinder (200).
3. The universal cylinder water pressure load experiment device as claimed in claim 2, wherein a first protruding end of the steel core inner cylinder (200) is provided with a first connecting hole (203) along a radial direction, the jacking ring (201) is provided with a second connecting hole (204), and the first connecting hole (203) and the second connecting hole (204) are connected through a second locking piece (205).
4. The universal barrel hydraulic load experiment device according to claim 3, wherein the first sealing end (300) comprises a first end face flange (302), the first end of the experiment barrel (100) is provided with a second end face flange (102), and the first end face flange (302) is connected with the second end face flange (102) to realize the sealing fixation of the first extending end of the steel core inner barrel (200);
the second sealing end (400) comprises a third end face flange (401), a fourth end face flange (103) is arranged at the second end of the experiment cylinder body (100), and the third end face flange (401) is connected with the fourth end face flange (103) to realize the sealing and fixing of the second extending end of the steel core inner cylinder (200).
5. The universal barrel hydraulic load experiment device according to claim 4, wherein a water injection hole (303) is formed in the first end face flange (302), the outer side end of the water injection hole (303) is connected with an external water injection pipeline, and the inner side end of the water injection hole (303) is communicated with the first end of the flow channel (101);
and the third end face flange (401) is provided with an exhaust hole (402), and the exhaust hole (402) is communicated with the second end of the flow channel (101).
6. The universal cylinder hydraulic load experiment device according to claim 5, wherein a first sealing groove (304) is formed in the end face, abutted against the second end face flange (102), of the first end face flange (302), and a first sealing ring (305) is connected in the first sealing groove (304);
and a second sealing groove (403) is formed in the end face, abutted against the fourth end face flange (103), of the third end face flange (401), and a second sealing ring (404) is connected in the second sealing groove (403).
7. The universal cylinder hydraulic load experiment device according to claim 6, wherein a third sealing groove (306) is formed in the inner ring surface of the first end face flange (302), and a third sealing ring (307) is connected in the third sealing groove (306);
and a fourth sealing groove (405) is formed in the inner ring surface of the third end surface flange (401), and a fourth sealing ring (406) is connected in the fourth sealing groove (405).
8. The universal cylinder water pressure load experiment device as claimed in claim 7, wherein a second protruding end of the steel core inner cylinder (200) is provided with an annular boss (104), and the third end face flange (401) abuts against the inner side of the annular boss (104).
9. An installation experiment method of a universal barrel hydraulic load experiment device is characterized by comprising the following steps:
a. installing the second sealed end
Sleeving a second sealing end (400) on a second extending end of the steel core inner cylinder (200) and abutting against the inner side of the annular boss (104) to fix the second sealing end (400);
b. inner cylinder for installing steel core
A first extending end of the steel core inner cylinder (200) is embedded along a second end of the experiment cylinder (100), so that the first extending end of the steel core inner cylinder (200) extends out of the first end of the experiment cylinder (100), a second extending end of the steel core inner cylinder (200) extends out of the second end of the experiment cylinder (100), a flow channel (101) for water flow to pass through is formed between the outer peripheral surface of the steel core inner cylinder (200) and the inner peripheral surface of the experiment cylinder (100), and the second extending end of the steel core inner cylinder (200) is fixed at the second end of the experiment cylinder (100) by a second sealing end (400);
c. installing the first sealed end
Sleeving a first sealing end (300) at a first extending end of the steel core inner cylinder (200), wherein the first sealing end (300) fixes the first extending end of the steel core inner cylinder (200) at the first end of the experiment cylinder (100);
d. water injection test detection
The external water injection pipeline on the first sealing end (300) injects water flow, the water flow enters the flow channel (101) along the water injection hole (303), the air exhaust hole (402) exhausts air in the flow channel (101) in time, and the pressure detector on the second sealing end (400) detects pressure in the flow channel (101).
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Application publication date: 20201110 |